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Transparent First-class Futures and Distributed Components

Antonio Cansado 1 Ludovic Henrio 1 Eric Madelaine 1
1 OASIS - Active objects, semantics, Internet and security
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : Futures are special kind of values that allow the synchronisation of different processes. Futures are in fact identifiers for promised results of function calls that are still awaited. When the result is necessary for the computation, the process is blocked until the result is returned. We are interested in this paper in transparent first-class futures, and their use within distributed components. We say that futures are transparent if the result is automatically and implicitly awaited upon the first access to the value; and that futures are first-class if they can be transmitted between components as usual objects. Thus, because of the difficulty to identify future objects, analysing the behaviour of omponents using first-class transparent futures is challenging. This paper contributes with first a static representation for futures, second a means to detect local deadlocks in a component system with first class futures, and finally extensions to interface definitions in order to avoid such deadlocks.
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https://hal.inria.fr/inria-00311515
Contributor : Antonio Cansado <>
Submitted on : Monday, August 18, 2008 - 5:47:18 PM
Last modification on : Friday, January 8, 2021 - 11:14:19 AM
Long-term archiving on: : Thursday, June 3, 2010 - 6:31:17 PM

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Antonio Cansado, Ludovic Henrio, Eric Madelaine. Transparent First-class Futures and Distributed Components. 5th workshop on Formal Aspects of Component Systems, Sep 2008, Málaga, Spain. ⟨inria-00311515⟩

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